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Enter a value, an expression, or a term with a variable like 10^n+1 to list a range. Switch to Database id to look a number up by its stored id. Reading never stores anything; use Create to add a number to the database. See the expression syntax & functions reference.

P · Proven prime
id #1100000009055122424 2,067 digits created 2026-08-08

Value

426556079398913338059586319493746160561680820450127828486656793207444650524866873214255620554473380438156716156199005258299530343034804771509852549895322263714708024776121067269080840148059168320269471877200769560420159791328769389056667504635080757273265989564802032253071397835985655794075504755168257978838106478974618908218293883266213302684498039683387930093852963769955914748669351059775353018390624952449037632048774779095023671154755226925760744872298864303954278277936484515963732011399447117288021093127143026479299220058287574060514439931101192797812361027380707457106404422361661199617845731621778572215526972399534516950530336302131043827215302906885647864787203336842074911148528504472369587360824467743445359043394655105555468276922676532093894401512897356639718214267489464754189765202436292333912054533016697549385387662557081542704847616655799865556821871397344296252471759762044721841229274916607675352341424846197597244431560040135555154215891278041105087751251786781846899910807304123342270748310462535197080081404877927509869846866984431380061667375787416502038557223167543747049196410593989568583602940593939395961253844557226268911179681731872815855645988021690618223380807863517390296685823241948057972268173831212733569308909699947609635816909028335068291248307295251041370983361720467897326257646238906286151585052424808324445951030127582502233879025021101559778777276955773485754992572431873067685729279139594918662157553454235431049876692307590188089944331509105429289168769856893901423221872341375878638696403916154720087084313302757925681174653853496335470604055007111449921598569012035979794195598594659868518923236786773136147007697787343141006891389141737295901464091615578490582540896549125598176308085655195092661033594177340204300856887169919527721243603031705170793031129753249562511929938485270789045760098981146831287131626532700134350159637372828897433259518305645574598885695561648114565541969501333331789219559422566961122034240164987258363898280895032688779790075290821279780185218386960352990823897881928403625686290520481
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 32 of the certificate chain of a 2,419-digit prime (185 intermediate primes).

Certified number2,419-digit prime
Certificatedownload
Certificate chainshow step 32 of 185

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009055122424 --detail 2 --decimal
curl
curl -s 'https://factordb.com:4059/rpc' -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"get_number","params":{"target":{"id":1100000009055122424},"decimal":true,"detail":2}}'